A spider has a mass of 0.70-g and is hanging from rest on a 20-cm long thread of 0.0020-mm diameter of silk. Spider silk has a density of 1290 kg/m^3.
A) If the small child holding the other end of the silk moves their end of the silk, how long will it take for the spider to feel it?
B) If the string is whirled in a circle at a rate of 2 revolutions per second, what is the minimum and maximum time for vibrational information from one side of the string to reach the other?